Fuel-saver and smoke-consumer.



J. L. WEBSTER.

FUEL SAVER AND SMOKE GONSUMER.

APPLICATION FILED 11111.17, 1914. 1,125,228. Patented 11111.19, 1915.v

4 SHEETS-SHEET 1.

THE NDRRls PETERS Co 1 PHOTO LlrHO WASHIM; TON, DA C.

J. L. WEBSTER.

FUEL SAVER AND SMOKE CONSUMER.

APPLICATION FILED 11111.17, 1914.

4 SHEETS-SHEET 2.

1HE NORRIS PETERS Cov, FHOIGALITHO., WASHINGTON. D C

Patented 13111.19, 1915.

J. L. WEBSTER.

FUEL SAVER AND SMOKE CONSUMER.

APPLICATION HLED 11111.17, 1914.

J. L. WEBSTER.

FUEL SAVER AND SMOKE CONSUMER.

APPLICATION FILED JAN.17, 1914.

Patented Jan. 19, 1915.

4 SHEETS-SHEET 4.

THE NORRIS PETERS C0.. PHOTO-LITHO WASH/NGYON. D. C.

JOHN LINDSAY WEBSTER, OF OTTAWA, ONTARIO, CANADA.

FUEL-SAVER AND SMOKE-CONSUMER.

Specification of Letters Patent.

Patented J an. 19, 1915.

Application filed January 17, 1914. Serial No. 812,735.

To all whom it may concern Be it known that I, .lor-IN LINDSAY WEB-s'rnn, a subject of the King of Great Britin, and resident of the cityof Ottawa, Province of Ontario, Dominion of Canada, have inventedcertain new and useful Improvements in Fuel-Savers and" Smoke-Consumers,of which the following is the specication.

This invention relates to improvements in fuel savers and smokeconsumers, and particularly to that type of fuel saver in which theproducts of combustion are lead backwardly and forwardly beneath theboiler and then through the tubes, and the objects of the invention areto increase the efficiency of the device and eliminate smoke, whichobjects are accomplished by the use of air conduits, in the mannerhereinafter described, by which heated air, and if desired steam, isintroduced to the products of combustion at appropriate points, all ashereinafter more fully set forth and described in the accompanyingspecification and drawings.

In the drawings, Figure 1 is a longitudinal sectional view through anembodiment of the invention, a certain portion of the invention beingshown in elevation. Fig. 2 is a sectional plan view. Fig. 3 is a sectionlooking rearwardly, taken on the line 2-2, Fig. l. Fig. 4 is a sectionon the line 8 3, Fig. 1 looking rearwardly. Fig. 5 shows a plan and endView of the air distributing conduit. Fig. 6 shows a sectional detail ofone form of distributing nozzle. Fig. 7 shows a detail partially insection of one of the other distributing nozzles. Fig. 8 is a plan viewpartially sectional of an alternative form of the invention.

In the drawings like characters of reference indicate correspondingparts in all the figures.

Referring to the drawings, A represents a boiler, either for waterheating or the production of steam, and having a plurality of tubes 10therein. The boiler is supported in a masonry structure B which providesvertical spaces 11 and 12 at opposite ends of the boiler, the space 12being formed with a metal partition 13 which divides the tubes intoupper and lower sections and forms a bailie between them. The lowersection of tubes is adapted to contain more tubes than the uppersection, whereby a greater volume of the hot gases lis distributed overa greater y surface and the draft will not be interfered with.

The doors and other usual appliances on the front of the furnace havebeen omitted for the sake of clearness in illustration.

C represents the grate of any convenient form located centrally beneaththe boiler at the forward end. In accordance with the present inventionthe grate does not extend the full width of the space beneath theboiler, and return side channels E and F are formed on each side of thegrate separated therefrom by longitudinally extending baffle walls G andH which extend upwardly to the surface of the boiler. These baffle wallsare tapered slightly toward each other at their inner ends and end adistance short of the end of the boiler whereby a combustionlch'amberwill be provided in the rear portion of the boiler beyond the bridgewall K and in which combustion chamber the products vof combustion mayturn and 'pass through the channels E and F, direct communicationbetween said combustion chamber and the rear ends of the tubes being cutoff by means 'of a baffle wall L.

In order to bring the flamencar the surface of the boiler the portion ofthe combus-l tion chamber beyond the bridge wall is illed in withsuitable filling M to about twothirds of the height of the bridge wall.Tn place of making this a solid lling the same practical result may beobtained by the constructionI shown in the drawing, in which a iioor 20is supported on suitable beams 21 forming aspace 22, the rear ends ofthe tubes opening into the space 12, a partition 24 being provided a'short distance below the top of the baffle wall L, a suitable clean outopening 25 being provided in the rear wall 26 of the masonry structure.

From the foregoing it will be seen that when the products of combustionfrom the lire on the grate C will pass rearwardly to the combustionchamber N they will then turn and pass forwardly through the passagewaysE and F to the space 12, then through the lower section of the tubes tothe rear of the boiler into the space 11, then through the upper sectionof the tubes to the present invention air distributing conduits P and Q,are provided in the passageways E and F, preferably being supplied froma central conduit R connected by a T 27 and branch pipes 2S and 2 withthe conduits P and Q, said conduits extending longitudinally in thepassageways E and F and being formed with distributing nozzles 30 of theform shown in Fig. 7, said nozzles extending upwardly from the-conduitand being hook shaped and. tapered toward the discharge orifice 3l whichdischarges downwardly, thereby avoiding any deposit of soot or dirt inthe nozzle. The nozzles may be formed with screw threaded portions 38 bywhich they may be conveniently attached to the conduits. Tf the naturaldraft is not sufficient to draw air through the nozzles, suitableforcing means such as a blower S may be provided, connected to theconduit R. Auxiliary air distributing means are also provided in thespace l1, said means conveniently consisting of a transversely extendingconduit T extending across the top of the space 11 and connected withthe conduits P and Q by branch conduits 32 and 33. The air is dischargedfrom the conduit T through suitable nozzles 34e, preferably of theconstruction shown in Fig. 6, said nozzles being tapered to discharge,nozzles 35 being formed with screw threaded portions 36 by which theymay be engaged with the conduits. To further facilitate the eliminationof smoke, steam may be introduced through the conduit T by means ofnozzles l0 and 4:1 extending through the end of the conduit andcontrolled by suitable valves 42 and d3. This steam will also assist thedraft through the conduits and may, if desired, be used instead of theblower S.

Tt will be seen that the air prior to discharge will be thoroughlyheated by the passage through the conduits which are exposed to the hotfurnace gases and the air introduced will produce a secondary combustionwhich will edect an economy in fuel and eliminate smoke.

Tn the alternative form of the invention shown in Fig. 8 the grate C isat one side of the space beneath the boiler and a single bafiie wall Gis provided located a short distance from the center of the boiler onthe opposite side to the grate C whereby the products of combustion fromthe grate C will turn at the rear end of the boiler and pass through theconduit D on the opposite side of the baflie wall Gr and thence throughthe tubes.

As many changes could be made in the above construction and manyapparently widely different embodiments of my invention, within thescope of the claims, constructed without departing from the spirit orscope thereof, it is intended that all matter contained in theaccompanying specification and drawings shall be interpreted asillustrative and not in a limiting sense.

What l claim as my invention is:

l. ln a fuel saver and smoke consumer and in combination, a boilerformed with a plurality of tubes, a masonry struct-ure supporting thesame and forming spaces at the front and rear ends of the tubes, apartition at the front end of the tubes dividing the saine intoseparated sections, a grate and combustion chamber beneath the boiler, abaflie dividing said combustion chamber and causing the products ofcombustion to turn at the rear end of the boiler and pass to the frontthereof and then to pass successively through the section of tubes, airsupply conduits extending beneath the boiler and in the space at therear end of the tubes and formed with suitable discharge orices, andhook shaped nozzles on said discharge orifices being adapted todischarge downwardly.

ln a fuel saver and smoke consumer and in combination, a boiler formedwith a plurality of tubes, a masonry structure supporting the same andforming spaces at the front and rear ends of the tubes, a partition atthe front end of the tubes dividing the same into separatedv sections, agrate and combustion chamber beneath the boiler, a baffle dividing saidcombustion chamber and causing the products of combustion to turn at therear end of the boiler and pass to the front thereof and then to passsuccessively through the sections of tubes, air supply conduitsextending beneath the boiler and in the space at the rear end of thetubes and formed with suitable discharge orifices.

3. Tn a fuel saver and smoke consumer and in combination, a boilerformed with a plurality of tubes, a masonry structure supporting thesaine and forming spaces at the front and rear ends of the tubes, apartition at the front end of the tubes dividing the same into separatedsections, a grate and combustion chamber beneath the boiler, a bailledividing said combustion chamber and causing the products of combustionto turn at the rear end of the boiler and pass to the front thereof andthen to pass successively through the sections of tubes, air supplyconduits extending beneath the boiler and in the space at the rear endof the tubes and formed with suitable discharge orifices, a centralconduit supplying both of the aforesaid conduits, a T connection andbranch conduits connecting the central conduit with the other conduits.

d. Tn a fuel saver and smoke consumer and in combination, a boilerformed with a plurality of tubes, a masonry structure sup porting thesame and forming spaces at the front and rear ends of the tubes, apartition at the front end of the tubes dividing the same into separatedsections, a grate and combustion chamber beneath the boiler, a formedWith suitable discharge orifices, and baffle dividing said combustionchamber and means for injecting steam into the conduits. 10 causing theproducts of combustion to turn In Witness whereof I have hereunto set atthe rear end of the boiler and pass to the my hand in the presence oftWo Witnesses.

front thereof and then to pass successively JOHN LINDSAY WEBSTER.through the sections of tubes, air supply lVitnesses:

conduits extending beneath the boiler and RUSSEL S. SMART,

in the space at the rear end of the tubes and I. lM. GARROW.

Copies of this patent may 'ne obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, 1D. C.

